Improvement in lamps



J. K. ANDREWS LAMP.

Patented July 11 w: Noams vzvzns c0. PNorO-LITHQ, msmuomu, u. c.

clearly shown in Fig. l of the drawings.

UNITED STATES PATENT OFFICE.

JOSEPH K. ANDREWS, or AYNTRIM, OHIO, Assieuon TO HIMSELF AND J. c. TILTON, or PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 48,760, dated July 11, 1865.

invention. Fig. 2 is a plan or top view of the same.

Similar letters of reference indicate like parts.

. This invention consists in the employment or use of two perforated cylinders, one inside the other, and connected together byzi-rms extending from the inner to' the outer cylinder, in combinatiortwith an ordinary kerosene-lamp burner,in such a manner that by the air admitted through the perforations of the two cylinders, and bythe draft occasioned by the same, the smoke and surplus carbon areeonsumed and a burner is obtained'whieh gives-a brilliant and odorless light without the use of the ordinary glass cylinder.

A represents the top of an ordinary lampburner, \vhielris provided with a wick-tube, B, of the usual form andcoustruction.

Instead of the ordinary glass cylinder placed on the top of the burner I use a double cylinder, 0 D, made of perforated sheetmetal or wiregauze or other equivalent material, as The inner cylinder, D, connects with the outer cylinder, U, by a series of curved arms, a, which are bcntover the wick-tube, as clearly shown in the drawings. The inner cylinder, D, may be made round or flat, and it extends up somewhat beyond the top edge of the outer cylinder, which is to be made cylindrical to fit into the top of the burner. If desired, the inner cylinder, D, or both the inner and outer cylinders, may be made slightly taperin The wick terminates at the upper edge of the wick-tube in the ordinary manner, and when the flame is lighted the gases and products of combustion rise th rough the innercy linder, and they ignite on the top edge of the same, giviug a brilliant flame, either round or flat, according to the shape of said cylinder. The air passing in through the perforations in the cylinder or cylinders mingles with the smoke and unconsumed carbon emanating from the wick, and they are fully consumed, so as to give a brilliant and odorless flame.

By the combination of the outer with the inner cylinder the draft is increased and theescape of unconsumed, smoke is prevented. Without this outer cylinder a flame is obtained much less brilliant and emitting a bad odor, which renders the burner impracticable.

It is obvious that my double cylinder can be made of all sizes to fit to lamp-burners of different size and shape, and by its use the employment of the ordinary fragile glass cylinder can be dispensed with.'

1 claim as new and desire to secure by Letters Patent- The application of two cylinders, G D, made of perforated sheet metal or other equivalent material, and secured, one inside the other, on a lamp-burner, A, ofthe ordinary construction, substantially as and for the purpose herein shown and described.

JOSEPH K. ANDREWS.

Witnesses:

M. P. MURPHY, M. TROUTMAN. 

